Friction material including glass
fibers and method of
manufacture

ABSTRACT

NO ABSTRACT AVAILABLE IN THE IFI DATABASE FOR THIS PATENT

DEFENSIVE PUBLICATION UNITED STATES PATENT AND TRADEMARK OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 1%, 1969, 869 (LG. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered seriesand are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent and Trademark Ofiice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED DECEMBER 2, 1975 A brake lining or friction material comprised of glass fibers secured within a rigid binder and having a substantial number of ends of convolutions intersecting with the braking surface of the material. The material preferably comprises a plurality of bonded fibers generally extending in a common direction and intersecting with said braking surface. The fiber alignment may be positioned relative to the direction of relative movement of the braking members for optimum braking efiicicncy in one direction. Such aligned fiber materials may be produced in a continuous process in the form of uncured blocks of aligned fibers and binder which are subsequently formed under elevated pressure and temperature into brake pads or shoes or other friction components. Brake pads having aligned or oriented fibers may be produced in a continuous process, starting with the forming of glass fibers from a molten batch, depositing a ribbon of aligned fibers upon a moving conveyor, applying liquid or powdered binder to the fibers, reducing the lateral and vertical volume of the ribbon to increase the density of the fiberbincler mix and finally separating the ribbon into shapes having a surface which intersects the aligned fibers.

Dec. 2, 1975 A. MARZOCCHI T941,012

FRICTION MATERIAL INCLUDING GLASS FIBERS AND METHOD OF MANUFACTURE On'ginal FilCd July 26, 1974 Ifiglb W TQM.

ATTORNEYS Dec. 2, 1975 A. MARZOCCHI FRICTION MATERIAL INCLUDING GLASS FIBERS AND METHOD OF MANUFACTURE Sheet 2 of 2 Original Filed July 26, 1974 

